你能由公式(a+b)²=a²+2ab+b²推导出(a+b+试写出推导过你能由公式(a+b)²=a²+2ab+b²推导出(a+b+c)²=a²+b²+c²+2ab+2bc+2ac吗?试写出推导过程。
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 02:48:51
![你能由公式(a+b)²=a²+2ab+b²推导出(a+b+试写出推导过你能由公式(a+b)²=a²+2ab+b²推导出(a+b+c)²=a²+b²+c²+2ab+2bc+2ac吗?试写出推导过程。](/uploads/image/z/5293801-1-1.jpg?t=%E4%BD%A0%E8%83%BD%E7%94%B1%E5%85%AC%E5%BC%8F%28a%2Bb%29%26%23178%3B%3Da%26%23178%3B%2B2ab%2Bb%26%23178%3B%26%238203%3B%E6%8E%A8%E5%AF%BC%E5%87%BA%28a%2Bb%2B%E8%AF%95%E5%86%99%E5%87%BA%E6%8E%A8%E5%AF%BC%E8%BF%87%E4%BD%A0%E8%83%BD%E7%94%B1%E5%85%AC%E5%BC%8F%28a%2Bb%29%26%23178%3B%3Da%26%23178%3B%2B2ab%2Bb%26%23178%3B%E6%8E%A8%E5%AF%BC%E5%87%BA%28a%2Bb%2Bc%29%26%23178%3B%3Da%26%23178%3B%2Bb%26%23178%3B%2Bc%26%23178%3B%2B2ab%2B2bc%2B2ac%E5%90%97%EF%BC%9F%E8%AF%95%E5%86%99%E5%87%BA%E6%8E%A8%E5%AF%BC%E8%BF%87%E7%A8%8B%E3%80%82)
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来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 02:48:51